Scaffolding support



Nov. 8, 1932. R. .1. TOBIN SCAFFOLDING SUPPORT Filed July 11, 1930INVENTOR Robe/*1 J 706.271

W M D v ATTOR N EYS Patented Nov. 8, 1932 UNITED STATES PATENT OFFICEROBERT .i. TOBIN, or HOLLIS, NEW YORK, AS-SIGNOR 'ro TILO ROOFINGCOMPANY, INC., or NEW YORK, N. Y., A coRroRArroN or DELAWARE se'arrornmesURroRr Applicatiomiiled July 11, 1930. Serial No. 467,151.

The invention relates to supports and more particularly to brackets forsupporting scaffolding and the like.

An object of the invention is to produce a bracket of the above kind,which is easily attachable to an inclined member, such as a ladder or aninclined roof.

Another object of the invention is to provide a bracket which willeffectively support scaffolding planks and which will prevent the planksfrom slipping off the brackets, and also prevent them from tippingupwardly at their outer edges.

Another object of the invention is to provide a bracket whichis of lightweight, and yet which is strong and durable and easy to use.

Other objects of the invention will be apparent from the followingdescription and claim when considered with the accompanying drawing, inwhich Fig. 1 illustrates a bracket according to the invention on aninclined roof;

Fig. 2 is a side elevation of the bracket;

Fig. 3 is a front elevation of the bracket;

Fig. 4.- is a section through one of the keyhole slots taken on the line44 of Fig. 3;

Fig. 5 illustrates the bracket supported by a ladder;

Fig. 6 is a front elevation of a plank supported by brackets mounted onladders against the side wall of the building; and

Figs. 7 and 8 illustrate modified forms of bracket.

In the following description and in, the claim parts will be identifiedby specific names for convenience, but they are intended to be asgeneric in their application to similar parts as the art will permit.

Like reference characters denote like parts in the several figures ofthe drawing.

In the drawingaccompanying and forming part of this specification,practical commercial embodiments of the invention are disclosed, but assuch illustrations are primarily for purposes of disclosure, it will beunderstood that the structures may be modified in various respectswithout departure from the broad spirit and scope of the invention as 50hereinafter defined and claimed.

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Referring now to the drawing, and more particularly to Figures 2, 3 and4, the bracket is made up of a strip of sheet metal bent to form aninclined member 10, and a vertical member 11. The bracket furthercomprises a member which is bent to form a horizontal supporting portion12, a vertical retaining portion 15 and an inwardly projecting portion16. The portion 12 has an offset part which is secured to the inclinedportion 10 by a rivet 13, and the vertical portion 11 has an offsetportion which is secured to the horizontal portion 12 by a rivet 14. Therivets 13 and 14 may .be substituted by or supplemented with welding orany other form of fastening metal members.

For securing the bracket to a su porting member a plurality of keyholeslots 1 may be provided, three being illustrated in these figures. Eachkeyhole slot comprises a comparatively large circular portion 19, and acomparatively long and narrow portion 20. The part of the metaladjoining the circular portion 19 is pressed up, as indicated at 18, tofacilitate threading the brackets over the nails. It will be understoodthat if desired the brackets may be placed in position, and nails may bedriven through the parts 20, or if desired, the nails 21 may be drivenin position first and the brackets threaded over the nails by passingthe head of the nail first through the circular part of the hole 19 andmoving the brackets downwardly so that the comparatively long and narrowportion 20 surrounds the shank of the nail 21 under the head. It willthus be seen that the offsetting at 18 facilitates mounting thebrackets'on and detaching them from the nails 21.

The angle between the inclined portion 10 and the horizontal portion 12may be determined. by the angle of slope of the surface on which thebracket is to be used. Furthermore, the brackets may be secured to aninclined ladder, such as indicated in Figures 5 and 6, or to theinclined roof of a house, such as indicated in Figure 1.

Referring now to Figure 1, the house is indicated by 22 and the inclinedroof by 23. A plurality of brackets are indicated by 2 1, these bracketssupporting a plank 25.

' brackets, indicated by 31 may be fastened to the longitudinal membersof the ladders by. nails driven into the longitudinal members, asindicated in the ladder at the left of Fig. 6. A plank indicated by 33rests u on the horizontal parts of the brackets 31, eing held inposition by the portions 15 and 16 of the brackets.

If desired, the bracket above described may be provided with analternative fastening means in the form of a hook indicated by 3,5

in Fig. 7. In this figure the ladder 28 has a,

"strip having its mner end secured to said 1nplurality of rungs 37, andthe bracket 34 has a hooked portion 35 hooked over one of the rungs ofthe ladder, the bracket resting agamst the next lower rung.

In this case it is preferable to make the brackets in pairs permanentlyfastened together by cross members 50 suitably riveted or otherwiserigidly secured to the inclined members 10 of the brackets as indicatedin Fig. 7 and in the right side of Fig. 6. These serve to prevent allchance of sidewise tipping of the outer parts of the brackets.

If desired, a plank made of two boards 36 instead of a single board maybe supported by the brackets as indicated in Fig. 7.

In cases where it is not desirable to use the brackets described above,a bracket with a clamp may be used as indicated in Fig. 8. In thisconstruction the single brackets are provided with a clamp 45 at theupper end of the inclined portion 10, the clamp engaging around t elongitudinal member of the ladder. The clamp 45 is made up of jaws orsections 40 and 44 through the flanges 42 and 43 of which clampingscrews or bolts indicated b 46 are passed. The upper end of the inclinemember 10 is riveted or otherwise secured to the part 40.

If desired, the clamp 45 may be tightly affixed to the longitudinalmember of the ladder or it may be more or less loosely aflixed thereto;in either case the rungs 39 will prevent downward movement of thebracket for any dangerous distance.

In case the supports are nailed to a shingled surface the nail holes caneasily be plugged up by roofing material, especially in case flexiblecomposition shingles are used. In short, these supports are inexpensiveto make, easy to positlon and reliable to use, effectively supportingthe planking and preventing displacement thereof with the consequentalpossible injury to the workmen.

While certain novel features of the invention have been shown anddescribed and are pointed out in the annexed claim, it will beunderstood that various omissions, substitutions and changes in theforms and details of the device illustrated and in its operation may bemade b those skilled in the .art without departing cm the spirit of theinvention.

What is claimed is:

In scaffolding, a lurality of inclined ladders, a support on t e upperside of each ladder, each support comprlsing spaced brackets, eachbracket comprising a first strip having an inclined portion and avertical portion connected by a bend under said portions, a secondstriphaving a horizontal .portion and an outer upward bend providing anupstanding portion and an inwardly pro ecting portion, said first striphaving the top of said vertical portion secured to the horizontalportion between the ends thereof, said second clined portlon, saidinclined portions having means at their upper ends for suspension fromsaid ladders, each support having cross members connecting the bracketsthereof to prevent turning of the brackets under load, and a plankextending from one of said supports to the other and resting on bothhorizontal and in both outer upward bends of each support.

In testimony whereof I have hereunto set m hand.

y ROBERT J. TOBIN.

